General Notes; Ras-3Hvrc2 - Hitachi UTOPIA R32 Series Technical Catalogue

8 Refrigerant cycle

General notes

8.1 General notes

8.2 RAS-3HVRC2

5
16
5
16
8
4
11
B
Ø6.35
Ø9.52
Ø8.0
Ø15.88 Ø12.7
A
10
6
13
Heating Cooling
refrigerant flow refrigerant flow
80 TCGB0136 rev.1 - 05/2021
Mark
A Gas line refrigerant piping connection
B Liquid line refrigerant piping connection
C Outdoor unit
C
Ø6.35
Ø6.35 Ø4.76
Ø12.7
Ø9.52
Ø9.52
Ø12.7
12 1 3
Water flow
Field supplied
(Heating/
piping line
Cooling)
Part name
14
2
Nº
1 Compressor
2 Air side heat exchanger
3 Accumulator
4 Refrigerant strainer
5 Distributor
7
6 Silencer
9
7 4-way valve
Ø12.7
8 OU electronic expansion valve
9 Refrigerant check joint
10 Stop valve for gas line
Ø6.35
11 Stop valve for liquid line
6
12 High pressure switch for protection
13 Pressure switch for control
14 Ambient thermistor
3
15 Discharge gas thermistor
16 Pipe thermistor
15
Flare nut
connection
Part name
Refrigerant
Brazed
R32
connection
G0000069481